Submission #52349

#	Time	Username	Problem	Language	Result	Execution time	Memory
52349		tmwilliamlin168	Stove (JOI18_stove)	C++14	100 / 100	16 ms	1020 KiB

stove

#include <bits/stdc++.h>
using namespace std;

inline int in() {
	int result = 0;
	char ch = getchar_unlocked();
	while(true) {
		if(ch >= '0' && ch <= '9')
			break;
		ch = getchar_unlocked();
	}
	result = ch-'0';
	while(true) {
		ch = getchar_unlocked();
		if (ch < '0' || ch > '9')
			break;
		result = result*10 + (ch - '0');
	}
	return result;
}
inline void out(int x) {
	int rev=x, c=0;
	while(!(rev%10)) {
		++c;
		rev/=10;
	}
	rev=0;
	while(x) {
		rev=rev*10+x%10;
		x/=10;
	}
	while(rev) {
		putchar_unlocked(rev%10+'0');
		rev/=10;
	}
	while(c--)
		putchar_unlocked('0');
}

const int mxN=1e5;
int n, k, t1, t2, ans, d[mxN-1];

int main() {
	n=in(), k=in();
	for(int i=0; i<n; ++i) {
		t2=in();
		if(i)
			d[i-1]=t2-t1-1;
		t1=t2;
	}
	ans=n;
	sort(d, d+n-1);
	for(int i=0; i<n-k; ++i)
		ans+=d[i];
	out(ans);
}

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50